How can you expect for support in versions that was downloaded from other sites? If you want to get NaviTotal's team support, uninstall this version, and use the version that provided on this forum, here. Maybe things will work out with this version.
That blue arrow is the default, it will show up even if the folder content/car is empty. If you want to replace it to a specific car, you need to have files in this folder, and you can choose the car via the menu (More-> Settings-> Map settings-> 3D car gallery).
I got the latest version from THIS site and had the same problem...went back to the March 11th version as I couldn't fix it. The car selection IS available, so it's not like the objects are missing. You can verify that if you move the map from it's default position - the arrow will re-appear until it re-centers the map. Weird....
I also didn't see any major changes vs the older (by 10 days ) version, so I think it's not worth investigating too much.
Really guys, I see no reason at all to update every day/week. Do you have such an urge to always have the latest, the newest? By updating a lot, you only get more chances for a mishap, as is proven again now. The release dates are that close that big differences are not likely. Possibly small corrections, a font here or a color there. What do you really expect to gain from a new buildnumber?